I don't know if this helps or not. The ZPS site is about useless as it doesn't provide any specs at all, except to show we make 120mm/125mm tank ammo and here are the types we make. What is clear is the 125mm round made from ~1991 to 2000 wasn't that great with a universally excepted penetration rate (On the net from
all source types.) of 460mm @ 2km. In 2001 with changes made to both the penetrator and propellant casing the penetration rate was increased to 540mm @ 2km (Again from
all source types.) though less than a handful indicated a range of penetration from 500mm to 560mm @ 2km. 540mm seems to be within the margin of error and preponderance of sites and pages gone through. There were "shadows" of information that improvements were ethier made (Within the last couple of years.) or are being made to improve the penetration of the 125mm rounds in the near future, "shadows" are just that and there is already way too much speculation going on around here already.
http://www.zps.com.pl/en/ammunition125mm.html
http://articles.janes.com/articles/J...nd-Poland.html
http://articles.janes.com/articles/J...on-Poland.html
I don't know if the JANES site provides any further insight (Current from May 2012.) to the Polish 125mm ammo issue or not, but it does seem to raise further questions
(Or not.) on how effective Russian 125mm ammo was during the 80's to early 90's.
Regards,
Pat